Travel to Bangladesh

I am planning to visit Bangladesh during 3rd. week of February . Will travel alone from Kolkata by luxury bus to Dhaka . Then wish to visit Kusthia for a day , will probably take a car , travel to Kusthia and nbe back by the evening to Dhaka. Then I wish to Visit Sylhet . Need advice on Volvo AC bus or equivalent travel. Which company is the best bus service provider in that route. what time bus leaves , how much time to travel ? What is the fare ? Is it possible to book bus tickets online ? And which is the good mid range hotel in Sylhet central area ? Will it be safe as a single traveler to go round the city of Sylhet and take photos ? Is it easier to travel from Dhaka to Karimganj to Silchar and then take flight back to Kolkata compared to return Sylhet - Dhaka - Kolkata by bus again ?

Thank you for your valuable response . Your website is just wonderful . Very impressed with your service to tourists to Bangladesh.

I have one more question. If I travel on my own by bus to Sylhet and back and make arrangement at hotel for my stay what is the way to see around Sylhet for two days I will have . Will it be possible to get local day tours or I have to hire a cab to go around on my own ? Or should I book a Dhaka - Sylhet Dhaka tour for 3 nights 4 days . Can you recommend a Dhaka Sylhet Dhaka tour ?

Sylhet is the place of my ancestors and I have emotional attachment to that place . Will like to see as much as I can . Dhaka Dakhin , Kastoghar lane , MC College - names I have heard from my parents who came back to India in 1947 .